Donald Trump’s doctor Sean Conley walked back the comments he made on Saturday about the president’s health, including when he first tested positive for COVID-19.

Conley said that he misspoke at a press conference earlier on Saturday when he said, Trump was “just 72 hours into the diagnosis now”- a statement that appeared to shift the timeline of Trump’s positive coronavirus test and treatment.

Trump had posted on Twitter on Friday that he and first lady Melania Trump had tested positive for the coronavirus. Subsequently, the White House announced that he had been treated with Regeneron’s experimental antibody therapy.

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However, during a briefing on Saturday, Conley said that Trump was “just 72 hours into the diagnosis now,” which would have put his diagnosis at midday Wednesday. Another physician, Dr Brian Garibaldi, said Trump was treated with an experimental antibody therapy “about 48 hours ago,” which would have been midday Thursday.

Had the president been diagnosed on Wednesday, that would mean he attended a fundraiser in Minneapolis, held a rally later that night and flew on Air Force One to attend another fundraiser in New Jersey the next day, all while being infected with the coronavirus.

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However, Conley released a memo later in the day clarifying the timeline.

“This morning while summarizing the President’s health, I incorrectly used the term ‘seventy-two hours’ instead of ‘day three’ and ‘fourth eight hours’ instead of ‘day two’ with regards to his diagnosis and the administration of the polyclonal antibody therapy. The President was first diagnosed with COVID-19 on the evening of Thursday, October 1st and had received Regeneron’s antibody cocktail on Friday, October 2nd,” the memo read.